Stretching and Shrinking b 08

Stretching and Shrinking

Big IdeaMany things in our world are mathematically similar and we can use this to understand and describe the world around us.

Essential Question # 1 - How can I make a drawn figure larger?
1.1 Stretching a Figure - Arfan
Mathematical Reflections p.13 - Eva

Essential Question # 2 - What is the same and what is different about “similar” figures?
2.1 Drawing Wumps - Matthew
2.2 Nosing Around - Pratik
2.3 Making Wump Hats - Nity
Mathematical Reflections p.27 - Vio

Essential Question # 3 - How can I use math to check if two figures are similar?
3.1 Identifying Similar Figures - Drew
3.2 Building with Rep-tiles - Hunter
3.3 Subdividing to find Rep-tiles - Jason
Mathematical Reflections p.40 - Danish

Essential Question # 4/5 - What types situations can I use my similarity ideas to solve?
4.1 Using Similarity to Solve a Mystery - Adit
4.2 Scaling Up - Jae
4.3 Making Copies - Rigsby
4.4 Using Map Scales - Aiman
Mathematical Reflections p.58 - Warsarme

Essential Question # 4/5 - What types situations can I use my similarity ideas to solve?
5.1 Using Shadows to Find Heights - Lamisa
5.2 Using Mirrors to Find Heights - Ned
5.3 Using Similar Triangles to find Distances - Lena
Mathematical Reflections p.74 - Vio



Stretching and Shrinking Vocabulary

1. angle measure
2. compare
3. congruent
4. corresponds/corresponding
5. diameter
6. image
7. parallel
8. perpendicular
9. ratio
10. scale
11. scale factor
12. similar
13. vertex